Volatile fumigant pad



Feb. 3, 1959 F. H. MAYER 2,872,244

` VOLATILE FUMIGANT PAD Filed June 26, 1956 1N V EN TOR.

VUIJA'IILE FUMIGAN'I PAD Fred H. Mayer, Iortland, Oreg.

Applicanon lune 26, 1956, Serial No. 593,877

4 Claims. (CI. 299-24) My invention relates to insecticide and deodorizing volatile fumigant pads of the same general description illustrated and described in my two Patents No. 2,054,434 dated September 15, 1936, and Patent No. 2,542,341 dated February 20,1951, in which a cardboard supporting body is provided with cut out sections to form lingers and a coating of volatile fumigant material coated on said fingers.

The main object of this invention is to provide an improved method of preventing llaking off of the volatile fumigant coating material from the cardboard ingers of the support, during the breaking apart operation. With this new construction the coating can be made thinner thereby permitting said volatile fumigant coating material to present more surface to the air for evaporation thereby increasing the functional eliiciency of the device.

Referring to the drawings, in which like characters of reference indicate corresponding parts throughout the several views- Fig. I is a side elevation of fumigant pad embodying my invention.

Fig. II is a Vertical section on line II--II of Fig. I.

Fig. III is a side elevation of the cardboard base of a fumigant pad embodying my invention.

Fig. IV is a traverse section on line IV-IV of Fig. I.

Fig. V is a cross sectional view taken on line V-V of Fig. I.

On the drawings, I indicates the body or cardboard base of my device. It includes a plurality of dependent lingers 2. The sections cut-out to form the lingers is represented by numeral 3. The cut out sections providing bumps or knobs 4 along the inside edge of the lingers 2. The vertical slots 5 perforatnig the upper part of the cardboard base are provided for easy separation of the cardboard and to provide a hanger for suspending each linger. Vertical perforating slots 6 are to provide an aperture that can be stretched open for easy suspension from a clothes hook.

In the manufacture of these fumigant pads the preferred method is to dip and repeatedly dip the bare cardboard base into a vat of melted naphthaline. A coating of predetermined thickness can be built up on the cardboard lingers by allowing the pad to cool down between dips. This dipping process produces a built up deposit of fumigant material 8 upon each of the lingers 2 and eucases each linger on all sides with a coating of substantially uniform thickness. The coating material will conform somewhat in shape to the shape of the cardboard fingers 2 and finally the knob-like protuberance 4 will have a knob-like protuberance in the coating material forming a neck-like connection 7 between the fingers and openings 9 between the connections 7.

Z,8?2,Z44 Patented Fein. 3, 1959 ice With this construction the coating material remains firmly attached to the cardboard lingers whether, or not, the frangible connection between the lingers breaks with a smooth surface, I have found that that portion of the volatile coating material to be used as a means of reenforcing, with rivet-like effect, to prevent cleavage between the volatile fumigant coating material and the cardboard lingers, during the breaking apart operation, must be as close as possible to the point of cleavage between the lingers.

In View of the foregoing description taken in conjunction with the accompanying drawings it is deemed that a clear understanding of the invention will be apparent to those skilled in the art. Therefore a more detailed .description is accordingly thought unnecessary.

Having described the invention, what is claimed as new is:

1. A fumigant pad consisting of a cardboard support having a section cut out to form spaced dependant lingerlike members, said linger-like members having one or more knob-like protuberances extending laterally into said cut out space and a coating of volatile fumigant material encasing said linger-like members on four sides and providing a frangible connection between the linger-like members.

2. A fumigant pad consisting ol a supporting body having a section cut out to form spaced dependant lingerlike members and a volatile fumigant material coated on four sides of said finger-like members, a frangible connection consisting of one or more spaced neck-like lateral protuberances formed in said volatile fumigant coating material, disposed between the finger-like members and extending to the fumigant coating material of the next linger-like member, providing the said frangible connection therebetween.

3. A fumigant pad consisting of a cardboard support having a section cut out to form spaced linger-like members and a volatile crystalline material coated on said linger-like members, said coating material providing a frangible connection between said linger-like members, said frangibie connection being provided with weakening holes, the distance between said weakening holes being short enough to prevent loosening of the crystalline coating material from the said cardboard finger-like members, during the breaking apart operation.

4. A volatile fumigant pad consisting of a cardboard support having a section cut-out to form spaced dependent linger-like members, said linger-like members having a tooth-like projection extending laterally into said cut-out space, a coating of volatile fumigant material encasing said ringer-like members, said coating material having a knob-like portion formed when coated on said tooth-like projection, the said knob-like portion of said coating material joining the coating material on the next finger-like member, providing a frangible connectiontherebetween.

References Cited in the le of this patent UNITED STATES PATENTS Ice Cream Trade Journal, May 1956, page 74, illustration at top left of page 74 of Icy Frost Twin by Ice Cream Novelties. 

